The best way to learn how other people work and swap ideas about shortcuts and tricks is to simply look over their shoulders and watch. So, Lifehackers, let us look over your shoulder - we've got some goodies to give away for your trouble.

I've set up the Lifehacker Desktop Show and Tell group over at photo-sharing site Flickr. Take a screengrab of your computer desktop and add it to the group's photo pool. Over the next two weeks we'll feature some of the best-looking tricked-out reader desktops in the group. Be sure to use Flickr's great "Add note" annotation tool to show us around your virtual workspace.

But wait, there's more! Since we've got some goodies laying around here at Lifehacker HQ, we're putting on our Santa hats. Want a free copy of Getting Things Done, a new Moleskine for the New Year, a Do Not Forget doorhanger or a USB thumbdrive? Well, get to screengrabbing! The readers whose desktops we feature here on Lifehacker will receive a treat in their real-life mailbox from us.

Instructions, prize info and disclaimers:

If you're not a Flickr member, go ahead and join to participate in the giveaway. It's totally free and fun and addictive.

To take a screenshot of a Windows desktop, hit Alt-PrntScrn, which will copy the image to your clipboard. Then open an image editor and hit Cntl-V to paste it into a new image. Mac users, see our screenshots on Mac OS X post for more info.

Once you've uploaded your photo, annotate it using the "Add note" button. When you're done, join the Lifehacker Desktop Show and Tell group. Then, from your photo, hit the "Add to Group" button and choose the group from the dropdown.

As much as we want to give away something to everyone, we just don't have enough stuff to do so. Only the readers whose desktops we feature here on Lifehacker will qualify for the giveaway. The desktops will be chosen at random times and depend entirely on whatever tickles our fancy at the moment. Yes, there will be incredible desktops that we miss and deserve a prize and not get it. To you, we apologize in advance.

Your desktop will have the best chance of being featured if you tell us about what software you use for what tasks and any lifehacky processes you've got set up for yourself. The more tips and tricks and neat software, the better. Impress us!

We'll feature one desktop every other day or so for the next couple of weeks until our supply of schwag runs out. Once we feature your desktop, we'll Flickr message you a request for your mailing address to ship out your free gift. If we don't hear from you for more than a couple of weeks we're going to take your prize and stuff it into one of our family members' stockings.

We can't promise a specific gift to the prize-winning readers as it all depends what we've got stocked up around here at the time, but we'll do our best to accomodate your preference.

Any questions? Let us know at tips at lifehacker.com or here in the comments. Good luck!